Wrench.



No. 754,063. PATBN1'511- MAR. Sflsm,A

G. E. HAWKINS L P. GARY.

l WRENCH.

APPLICATION FILED A PR. 10, 1903.-

lNo M oDEL.

UNHED STATES 'Patenten march s, 1904.

" ATENT stica.

CHARLES E. HAWKINS, OF EAST PITTSBURG, AND FRANK CARY, OF WILKINSBURG, PENNSYLVANIA.

WRENCH.

SPEGIFIGATION forming part of Letters Patent No. 754,068, dated March 8, 1904.

Application filed April 10, 1903. Serial No. 151,961. (No model.)

To all' whom it 'may concern:

Beit known that we, CHARLES E. HAwKINs, residing at East Pittsburg, and FRANK CARY, residing at Wilkinsburg, in the county of Alleghenyand State of Pennsylvania, citizens of the United States of America, have invent- .ced certain new and useful Improvements in Wrencheaof which thefollowing is a specification, reference being had therein to the accompanying drawings.

Th Vmventionrelates to certain new and useful'im rovements 1n wrenches, and relates .particular y to that type of wrenches generally known'in the tradeas monkey-wrenchesf and therprimary object of the invention is to oonstryueta `wrench of this type in which the movable 'jaw may be easily, quickly, and conveniently shifted to differentpositions in order to accommodate different-sized nuts or burs.

fAnot er object o fl our invention is to provide a in.' vable jaw for wrenches of this type that may be applied to the ordinarymonkeywrenches now generally employed, and a further object is to construct a wrench of extremely simple, strong, and durable construc- .t Lon.

' The invention consists 1n the novel construction, combination, and arrangement of parts tobehereinaftermore specifically described and then particularly pointed out in the accompanying drawings, and in describing the invention in detail reference-will be had to .the said drawings, wherein like numerals of reference will be employed'for indicating like parts throughout the different views, in

,which- Figure l is a side elevation of our improved wrench, partly broken away Vand partially in longitudinal section. Fig. 2 is a rear elevation of the wrench with the handle partially broken away. Fig.' 3 is a transverse vertical sectional view throughthe movable jaw; and Fig. 4 is a detached detail perspective view of the locking-lever, partially broken-away.

T putour invention into'practice, we provide a wrench-shank 1, which is provided at itsouter end with a rigid jaw 2 and at its other .01' inner end with a suitable handle 3.

v'Ihe shank 1 'is preferably provided adjacent the inner end of the handle 3 with a notch or recess 4 to receive the nut or bur 5 of the screw-shaft 6. In our improved wrench this screw-shaft is employed only as an element of the means for holding the movable jaw in the adjusted position and also for imparting a slight movement or adjustment to the movable jaw after 'the latter has been adjusted to approximately the distance or position desired by the means to be hereinafter explained. In this connection our improved wrench differs from the ordinary construction of monkeywrenches in which the screw-shaft is emit may be readily engaged by the thumb or finger of the operator for actuating the same.

This locking-lever liescountersunk within the casing and carries a half-nut 12 for engagement with the threads or screw of the shaft 6, the said nut being held normally in engagement with said shaft 6 by means ofa stili flat spring 14, the forward end of which lits against the inclined -face of the jaw 7 and is secured thereto by a screw, pin, or other like fastening 15. The screw-shaft 6 operates freely .through an integral sleeve lwhich is apart of the casing, and is also free from engagement with the casing at any point, being only engaged by the half-nut 12, andin order that the spring 14: may exert its full tension upon f the locking-lever thold the half-nut 12 in engagement with the shaft 6 clearance 17 vis provided between the sleeve 16 and the lever. 10. The locking-lever carries on its upper face a stud 18, which projects into a slot 19, provided therefor in the spring 14, this stud engaging in the spring, serving to steady the.V

same and prevent any accidental lateral displacement thereof.

' To adjust the movable jaw, it is simply nec- 2 imanes essary to force the rear end of spring outwardly,'which is done by pressure against end 1l of locking-bar', thus disengaging half-nut 12 from the screw-shaft, at which time the jaw is free to slide on the shank. After adjusting to the approximate position if a ner adjustment is desired the turning of the shaft 6 by means of the nut 5 will accomplish the desired end. Upon pressure being relieved from outer end of lever 1() the spring 14 im ing the handle of such wrench and applying the jaw to the shank, using the screw formerly employed on the wrench in connection with our improved form of movable jaw.

While we have herein shown and described the wrench in detail as it is practiced by us, yet we do not wish to confine ourselves unduly to the specific construction, as it will be evident that various slight changes may be made without departing from the general spirit ofv our invention.

Having fully described our invention, what We claim as new, and desire to secure by Letters Patent, 1s-- In a wrench, the combination with the shanl;

having a rigid jaw at its outer end and a handle on its inner end, of a jaw slidably mounted on the shank and provided with a plain borenut in its rear end, a screw-shaft extending through saidA nut into the casing 0f the slid able jaw, a locking-lever pivoted in said casing and provided 4with a half-nut to en age the screw-shaft, a stud carried by said lockinglever, and a spring affixed near its one end to the sliding jaw and lying in engagement with said locking-lever for holding the half-nut of the latter in engagement with the screw-shaft, said spring having a slot to receive the stud of the locking-lever, as and for the purpose described.

In testimony whereof We aix our signatures in the presence of two Witnesses.

CHARLES E. HAWKINS. i

FRANK CARY.

Witnesses:

H. C. Evan'r, Y E. E. POTTER. 

